Essene
Concise Oxford English Dictionary © 2008 Oxford University Press:
Essene /ˈɛsiːn/
▶noun a member of an ancient Jewish ascetic sect of the 2nd century bc–2nd century ad in Palestine.
– origin from L. Esseni (pl.), from Gk Essēnoi, perh. from Aramaic.
'Essene' also found in these Oxford entries:

